Hate to shine light on a shady idea but you could mark them all up and post them on ebay, just to weigh them and send out the lightest one after zeroing the scale with the bag on it Just so many factors that go into it to have the perfect way to do it though
Take the card's current raw (ungraded) value, look at what PSA 9 and PSA 10 copies of the same card have actually sold for on eBay recently, and factor in your total submission cost including grading fee, postage both ways, any membership fees, and return duties
Again with green's creatures being resilient, Thragtusk always leaves behind a 3/3
Incapsula incident ID: 553000141132090952-409556888698028971
Issues on ticketing and crowd control coupled with the printing of exclusive promo cards for winners (headlined by what then would have been the only known copy of Blue-Eyes Ultimate Dragon) and an exclusive premium pack of new cards only to be sold at the show - including the final as-yet-unreleased piece of Exodia - the event was riddled with issues of overcrowding and violence which forced riot police to be called and the entire thing to be scrapped within hours
Each Movie Pack Secret Edition contains three 5-card Secret Rare packs along with 3 of 6 Ultra Rares - either Krystal Dragon or Duza the Meteor Cubic, either Dark Magician or Blue-Eyes White Dragon, and either Slifer the Sky Dragon or Obelisk the Tormentor